Add pending change PRs to changelog
Add pending change PRs to changelog

Adds #2453 and #2451 to pending changlog.
yxd-hde/aws-sdk-go,yxd-hde/aws-sdk-go,yxd-hde/aws-sdk-go,yxd-hde/aws-sdk-go,aws/aws-sdk-go,jasdel/aws-sdk-go